Lib failed! (Mac 10.12.6)

A client running Mac OS10.12.6 gets a ‘lib failed’ message and cannot install Pan 6…

libraryfailed CC865CF3-3AA7-4797-9554-D#2:d:Extensions:Libraries:_PanoramaLib

Suggestions? Thanks.
screenshot6.jpg

That’s what Gatekeeper randomization looks like. You need to disable it before you can run the installer.